I'm building a bb 454 to replace the original sb 350. Anyone have advice on do's and don't's? I have a 1969 convertable z11, 4spd. New F&R springs last summer. Front rakes higher than rear now. New engine will have aluminum heads and intake. Should only be about 70 lbs heavier. Will put in new engine mounts, radiator, heater core. Do want to use bb cowl induction. What else should I be aware of?
BB 4 speed crossmember is different than the SB member, too. Get ready for sticker shock on one of those unless you buy a repop one. There are a ton of differences between a BB and a SB in a Camaro or Nova. Do a search on this site, you'll find all kinds of info about the differences.
Experience...... It's what you get when you didn't get what you wanted.
Will do. Thanks alot!!! I heard the crossmember is about $500. WOW! Would love to find a "how to manual" for step by step.......but that would take all the fun trial and error out that I'm so used to in all my adventures. Have a great day.
You also have to change the heater core box, at least under the hood, and get all different brackets for the engine accessories. I am doing the same thing myself except I am running an auto trans. I bought some Hedman headers, like new and they fit really nice, close to the steering box but not touching but passenger side has all sorts of room.
I'm doing nearly the same swap, an L36 427/390 into a 69 z11! I'll be watching this thread for pics! FYI there's a kit on ebay, not recommending or anything, but it's interesting to see what's included:
FWIW, I started a list on a spreadsheet, here's what I think I will need, I'm shooting for a stock 396 look so this list is based on that.
Alt mounting bracket set
Dipstick and tube
engine wiring harness
Ex Man bolts
Fuel filter bracket
Fuel pump rod
heater box conversion
Motor mount bolts
Oil pressure sender
Radiator 3 core auto
Radiator hose bottom
Radiator hose top
Spark plug wire stand and seperators
Spark plug wires
Temp sender unit
Throttle rod BB
Vaccum advance kit BB
69 Z11 03D Van Nuys
82 Z28 Gordon Johncock's Pace Car
97 30th Z28 6 speed vert 1 of 175
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Good list. You might look into a 4 core rad or an aluminum rad for increased cooling. You can get aluminun one that look stock. Deep groove pulleys may also help. My Holley has built in filters so you might not need the bracket and filter, but you will need new fuel lines.
Glad to see someone crazy like me. I'll have to figure out the pic thing for this thread, but I'll get it done. Have you figured an approximate cost of all the parts and where you're getting them from? The Ebay link was great to see. Are you doing the labor youself? I want to make mine look like factory 396 w/cowl induction. Probably use the 375hp stickers for the air cleaner. Use 396 for fender emblem. The 454 should end up having around 550 hp. Might put on headers instead of manifolds. Thanks for the contact.